spandsp  0.0.6
Telephone line model

What does it do?

The telephone line modelling module provides simple modelling of one way and two way telephone lines.

The path being modelled is:

-    terminal
-      | < hybrid echo (2-way models)
-      |
-      | < noise and filtering
-      |
-      | < hybrid echo (2-way models)
-     CO
-      |
-      | < A-law distortion + bulk delay
-      |
-     CO
-      | < hybrid echo (2-way models)
-      |
-      | < noise and filtering
-      |
-      | < hybrid echo (2-way models)
-    terminal